-36.7% is the change from 831 to 526
Calculation steps:
[( 526 - 831 ) ÷ 831] x 100 = -36.7%
Formula
Percentage change = [(526 - 831) / 831] x 100
Subtract the new number by the original number
526 - 831 = -305
-305 ÷ 831 = -0.36702767749699156
-0.36702767749699156 x 100 = -36.7%