850% is the change from 100 to 950
Calculation steps:
[( 950 - 100 ) ÷ 100] x 100 = 850%
Formula
Percentage change = [(950 - 100) / 100] x 100
Subtract the new number by the original number
950 - 100 = 850
850 ÷ 100 = 8.5
8.5 x 100 = 850%
Example