32.8% is the change from 378 to 502
Calculation steps:
[( 502 - 378 ) ÷ 378] x 100 = 32.8%
Formula
Percentage change = [(502 - 378) / 378] x 100
Subtract the new number by the original number
502 - 378 = 124
124 ÷ 378 = 0.328042328042328
0.328042328042328 x 100 = 32.8%