-82.62% is the change from 817 to 142
Calculation steps:
[( 142 - 817 ) ÷ 817] x 100 = -82.62%
Formula
Percentage change = [(142 - 817) / 817] x 100
Subtract the new number by the original number
142 - 817 = -675
-675 ÷ 817 = -0.8261933904528764
-0.8261933904528764 x 100 = -82.62%