-30.79% is the change from 302 to 209
Calculation steps:
[( 209 - 302 ) ÷ 302] x 100 = -30.79%
Formula
Percentage change = [(209 - 302) / 302] x 100
Subtract the new number by the original number
209 - 302 = -93
-93 ÷ 302 = -0.3079470198675497
-0.3079470198675497 x 100 = -30.79%