-26.93% is the change from 817 to 597
Calculation steps:
[( 597 - 817 ) ÷ 817] x 100 = -26.93%
Formula
Percentage change = [(597 - 817) / 817] x 100
Subtract the new number by the original number
597 - 817 = -220
-220 ÷ 817 = -0.2692778457772338
-0.2692778457772338 x 100 = -26.93%