| Source | Type III Sum of Squares | df | Mean Square | F | Sig. |
| Intercept | 8145.447 | 1 | 8145.447 | 206.726 | 0.000 |
| Percentage | 196.903 | 3 | 65.634 | 1.666 | 0.214 |
| Error | 630.436 | 16 | 39.402 |
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