-26.57% is the change from 813 to 597
Calculation steps:
[( 597 - 813 ) ÷ 813] x 100 = -26.57%
Formula
Percentage change = [(597 - 813) / 813] x 100
Subtract the new number by the original number
597 - 813 = -216
-216 ÷ 813 = -0.2656826568265683
-0.2656826568265683 x 100 = -26.57%