-14.32% is the change from 957 to 820
Calculation steps:
[( 820 - 957 ) ÷ 957] x 100 = -14.32%
Formula
Percentage change = [(820 - 957) / 957] x 100
Subtract the new number by the original number
820 - 957 = -137
-137 ÷ 957 = -0.14315569487983282
-0.14315569487983282 x 100 = -14.32%