98.58% is the change from 212 to 421
Calculation steps:
[( 421 - 212 ) ÷ 212] x 100 = 98.58%
Formula
Percentage change = [(421 - 212) / 212] x 100
Subtract the new number by the original number
421 - 212 = 209
209 ÷ 212 = 0.9858490566037735
0.9858490566037735 x 100 = 98.58%