-15.05% is the change from 957 to 813
Calculation steps:
[( 813 - 957 ) ÷ 957] x 100 = -15.05%
Formula
Percentage change = [(813 - 957) / 957] x 100
Subtract the new number by the original number
813 - 957 = -144
-144 ÷ 957 = -0.15047021943573669
-0.15047021943573669 x 100 = -15.05%