-28.1% is the change from 210 to 151
Calculation steps:
[( 151 - 210 ) ÷ 210] x 100 = -28.1%
Formula
Percentage change = [(151 - 210) / 210] x 100
Subtract the new number by the original number
151 - 210 = -59
-59 ÷ 210 = -0.28095238095238095
-0.28095238095238095 x 100 = -28.1%