98.81% is the change from 421 to 837
Calculation steps:
[( 837 - 421 ) ÷ 421] x 100 = 98.81%
Formula
Percentage change = [(837 - 421) / 421] x 100
Subtract the new number by the original number
837 - 421 = 416
416 ÷ 421 = 0.9881235154394299
0.9881235154394299 x 100 = 98.81%