-22.59% is the change from 270 to 209
Calculation steps:
[( 209 - 270 ) ÷ 270] x 100 = -22.59%
Formula
Percentage change = [(209 - 270) / 270] x 100
Subtract the new number by the original number
209 - 270 = -61
-61 ÷ 270 = -0.22592592592592592
-0.22592592592592592 x 100 = -22.59%