-87.22% is the change from 900 to 115
Calculation steps:
[( 115 - 900 ) ÷ 900] x 100 = -87.22%
Formula
Percentage change = [(115 - 900) / 900] x 100
Subtract the new number by the original number
115 - 900 = -785
-785 ÷ 900 = -0.8722222222222222
-0.8722222222222222 x 100 = -87.22%