This study aims to determine the benefits of financial ratios in predicting changes in profit. Financialratios in this study were measured using liquidity ratios with the Work Capital Total Asset (WCTA)formula, solvency ratio with the Debt to Equity Ratio (DER) formula, activity ratio with the TotalAsset Turnover (TAT) formula, and the profitability ratio with the Net Profit Margin formula (NPM).The results of this study partially concluded that the variable Working Capital to Total Assets (WCTA)had no significant effect on changes in earnings, the Debt to Equity Ratio (DER) variable had asignificant effect on earnings changes, the Total Asset Turnover (TAT) variable had a significant effecton changes profit, the variable Net Profit Margin (NPM) has no significant effect on earningschanges, while simultaneously the variables are Working Capital to Total Assets (WCTA), Debt toEquity Ratio (DER), Total Asset Turnover (TAT), Net Profit Margin (NPM) affect the variablechanges in earnings in automotive sub-sector manufacturing companies listed on the Indonesia StockExchange.Keywords: Working Capital to Total Assets (WCTA), Debt to Equity Ratio (DER), Total Asset
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