51.9% is the change from 422 to 641
Calculation steps:
[( 641 - 422 ) ÷ 422] x 100 = 51.9%
Formula
Percentage change = [(641 - 422) / 422] x 100
Subtract the new number by the original number
641 - 422 = 219
219 ÷ 422 = 0.518957345971564
0.518957345971564 x 100 = 51.9%