-70.63% is the change from 715 to 210
Calculation steps:
[( 210 - 715 ) ÷ 715] x 100 = -70.63%
Formula
Percentage change = [(210 - 715) / 715] x 100
Subtract the new number by the original number
210 - 715 = -505
-505 ÷ 715 = -0.7062937062937062
-0.7062937062937062 x 100 = -70.63%