21.05% is the change from 57 to 69
Calculation steps:
[( 69 - 57 ) ÷ 57] x 100 = 21.05%
Formula
Percentage change = [(69 - 57) / 57] x 100
Subtract the new number by the original number
69 - 57 = 12
12 ÷ 57 = 0.21052631578947367
0.21052631578947367 x 100 = 21.05%