-14.93% is the change from 958 to 815
Calculation steps:
[( 815 - 958 ) ÷ 958] x 100 = -14.93%
Formula
Percentage change = [(815 - 958) / 958] x 100
Subtract the new number by the original number
815 - 958 = -143
-143 ÷ 958 = -0.14926931106471816
-0.14926931106471816 x 100 = -14.93%