-83.61% is the change from 836 to 137
Calculation steps:
[( 137 - 836 ) ÷ 836] x 100 = -83.61%
Formula
Percentage change = [(137 - 836) / 836] x 100
Subtract the new number by the original number
137 - 836 = -699
-699 ÷ 836 = -0.8361244019138756
-0.8361244019138756 x 100 = -83.61%