99.52% is the change from 210 to 419
Calculation steps:
[( 419 - 210 ) ÷ 210] x 100 = 99.52%
Formula
Percentage change = [(419 - 210) / 210] x 100
Subtract the new number by the original number
419 - 210 = 209
209 ÷ 210 = 0.9952380952380953
0.9952380952380953 x 100 = 99.52%