-80% is the change from 710 to 142
Calculation steps:
[( 142 - 710 ) ÷ 710] x 100 = -80%
Formula
Percentage change = [(142 - 710) / 710] x 100
Subtract the new number by the original number
142 - 710 = -568
-568 ÷ 710 = -0.8
-0.8 x 100 = -80%
Example