129.1% is the change from 402 to 921
Calculation steps:
[( 921 - 402 ) ÷ 402] x 100 = 129.1%
Formula
Percentage change = [(921 - 402) / 402] x 100
Subtract the new number by the original number
921 - 402 = 519
519 ÷ 402 = 1.291044776119403
1.291044776119403 x 100 = 129.1%