99.06% is the change from 212 to 422
Calculation steps:
[( 422 - 212 ) ÷ 212] x 100 = 99.06%
Formula
Percentage change = [(422 - 212) / 212] x 100
Subtract the new number by the original number
422 - 212 = 210
210 ÷ 212 = 0.9905660377358491
0.9905660377358491 x 100 = 99.06%