-65.24% is the change from 210 to 73
Calculation steps:
[( 73 - 210 ) ÷ 210] x 100 = -65.24%
Formula
Percentage change = [(73 - 210) / 210] x 100
Subtract the new number by the original number
73 - 210 = -137
-137 ÷ 210 = -0.6523809523809524
-0.6523809523809524 x 100 = -65.24%