38.36% is the change from 305 to 422
Calculation steps:
[( 422 - 305 ) ÷ 305] x 100 = 38.36%
Formula
Percentage change = [(422 - 305) / 305] x 100
Subtract the new number by the original number
422 - 305 = 117
117 ÷ 305 = 0.3836065573770492
0.3836065573770492 x 100 = 38.36%