73.33% is the change from 30 to 52
Calculation steps:
[( 52 - 30 ) ÷ 30] x 100 = 73.33%
Formula
Percentage change = [(52 - 30) / 30] x 100
Subtract the new number by the original number
52 - 30 = 22
22 ÷ 30 = 0.7333333333333333
0.7333333333333333 x 100 = 73.33%