-27.05% is the change from 817 to 596
Calculation steps:
[( 596 - 817 ) ÷ 817] x 100 = -27.05%
Formula
Percentage change = [(596 - 817) / 817] x 100
Subtract the new number by the original number
596 - 817 = -221
-221 ÷ 817 = -0.27050183598531213
-0.27050183598531213 x 100 = -27.05%