41.75% is the change from 297 to 421
Calculation steps:
[( 421 - 297 ) ÷ 297] x 100 = 41.75%
Formula
Percentage change = [(421 - 297) / 297] x 100
Subtract the new number by the original number
421 - 297 = 124
124 ÷ 297 = 0.4175084175084175
0.4175084175084175 x 100 = 41.75%