66.23% is the change from 302 to 502
Calculation steps:
[( 502 - 302 ) ÷ 302] x 100 = 66.23%
Formula
Percentage change = [(502 - 302) / 302] x 100
Subtract the new number by the original number
502 - 302 = 200
200 ÷ 302 = 0.6622516556291391
0.6622516556291391 x 100 = 66.23%