-15.29% is the change from 968 to 820
Calculation steps:
[( 820 - 968 ) ÷ 968] x 100 = -15.29%
Formula
Percentage change = [(820 - 968) / 968] x 100
Subtract the new number by the original number
820 - 968 = -148
-148 ÷ 968 = -0.15289256198347106
-0.15289256198347106 x 100 = -15.29%