-71.43% is the change from 210 to 60
Calculation steps:
[( 60 - 210 ) ÷ 210] x 100 = -71.43%
Formula
Percentage change = [(60 - 210) / 210] x 100
Subtract the new number by the original number
60 - 210 = -150
-150 ÷ 210 = -0.7142857142857143
-0.7142857142857143 x 100 = -71.43%