-19.87% is the change from 302 to 242
Calculation steps:
[( 242 - 302 ) ÷ 302] x 100 = -19.87%
Formula
Percentage change = [(242 - 302) / 302] x 100
Subtract the new number by the original number
242 - 302 = -60
-60 ÷ 302 = -0.1986754966887417
-0.1986754966887417 x 100 = -19.87%