-70.83% is the change from 720 to 210
Calculation steps:
[( 210 - 720 ) ÷ 720] x 100 = -70.83%
Formula
Percentage change = [(210 - 720) / 720] x 100
Subtract the new number by the original number
210 - 720 = -510
-510 ÷ 720 = -0.7083333333333334
-0.7083333333333334 x 100 = -70.83%