-56.34% is the change from 710 to 310
Calculation steps:
[( 310 - 710 ) ÷ 710] x 100 = -56.34%
Formula
Percentage change = [(310 - 710) / 710] x 100
Subtract the new number by the original number
310 - 710 = -400
-400 ÷ 710 = -0.5633802816901409
-0.5633802816901409 x 100 = -56.34%