-75% is the change from 836 to 209
Calculation steps:
[( 209 - 836 ) ÷ 836] x 100 = -75%
Formula
Percentage change = [(209 - 836) / 836] x 100
Subtract the new number by the original number
209 - 836 = -627
-627 ÷ 836 = -0.75
-0.75 x 100 = -75%
Example