-87.4% is the change from 913 to 115
Calculation steps:
[( 115 - 913 ) ÷ 913] x 100 = -87.4%
Formula
Percentage change = [(115 - 913) / 913] x 100
Subtract the new number by the original number
115 - 913 = -798
-798 ÷ 913 = -0.8740416210295728
-0.8740416210295728 x 100 = -87.4%