-82.34% is the change from 855 to 151
Calculation steps:
[( 151 - 855 ) ÷ 855] x 100 = -82.34%
Formula
Percentage change = [(151 - 855) / 855] x 100
Subtract the new number by the original number
151 - 855 = -704
-704 ÷ 855 = -0.8233918128654971
-0.8233918128654971 x 100 = -82.34%