97.86% is the change from 421 to 833
Calculation steps:
[( 833 - 421 ) ÷ 421] x 100 = 97.86%
Formula
Percentage change = [(833 - 421) / 421] x 100
Subtract the new number by the original number
833 - 421 = 412
412 ÷ 421 = 0.9786223277909739
0.9786223277909739 x 100 = 97.86%