-71.15% is the change from 818 to 236
Calculation steps:
[( 236 - 818 ) ÷ 818] x 100 = -71.15%
Formula
Percentage change = [(236 - 818) / 818] x 100
Subtract the new number by the original number
236 - 818 = -582
-582 ÷ 818 = -0.7114914425427873
-0.7114914425427873 x 100 = -71.15%