-71.24% is the change from 817 to 235
Calculation steps:
[( 235 - 817 ) ÷ 817] x 100 = -71.24%
Formula
Percentage change = [(235 - 817) / 817] x 100
Subtract the new number by the original number
235 - 817 = -582
-582 ÷ 817 = -0.7123623011015912
-0.7123623011015912 x 100 = -71.24%