-9.93% is the change from 302 to 272
Calculation steps:
[( 272 - 302 ) ÷ 302] x 100 = -9.93%
Formula
Percentage change = [(272 - 302) / 302] x 100
Subtract the new number by the original number
272 - 302 = -30
-30 ÷ 302 = -0.09933774834437085
-0.09933774834437085 x 100 = -9.93%