-71.15% is the change from 811 to 234
Calculation steps:
[( 234 - 811 ) ÷ 811] x 100 = -71.15%
Formula
Percentage change = [(234 - 811) / 811] x 100
Subtract the new number by the original number
234 - 811 = -577
-577 ÷ 811 = -0.7114673242909988
-0.7114673242909988 x 100 = -71.15%