-77.39% is the change from 597 to 135
Calculation steps:
[( 135 - 597 ) ÷ 597] x 100 = -77.39%
Formula
Percentage change = [(135 - 597) / 597] x 100
Subtract the new number by the original number
135 - 597 = -462
-462 ÷ 597 = -0.7738693467336684
-0.7738693467336684 x 100 = -77.39%