-29.58% is the change from 710 to 500
Calculation steps:
[( 500 - 710 ) ÷ 710] x 100 = -29.58%
Formula
Percentage change = [(500 - 710) / 710] x 100
Subtract the new number by the original number
500 - 710 = -210
-210 ÷ 710 = -0.29577464788732394
-0.29577464788732394 x 100 = -29.58%