21.09% is the change from 422 to 511
Calculation steps:
[( 511 - 422 ) ÷ 422] x 100 = 21.09%
Formula
Percentage change = [(511 - 422) / 422] x 100
Subtract the new number by the original number
511 - 422 = 89
89 ÷ 422 = 0.2109004739336493
0.2109004739336493 x 100 = 21.09%