-27.75% is the change from 209 to 151
Calculation steps:
[( 151 - 209 ) ÷ 209] x 100 = -27.75%
Formula
Percentage change = [(151 - 209) / 209] x 100
Subtract the new number by the original number
151 - 209 = -58
-58 ÷ 209 = -0.27751196172248804
-0.27751196172248804 x 100 = -27.75%