51.99% is the change from 402 to 611
Calculation steps:
[( 611 - 402 ) ÷ 402] x 100 = 51.99%
Formula
Percentage change = [(611 - 402) / 402] x 100
Subtract the new number by the original number
611 - 402 = 209
209 ÷ 402 = 0.5199004975124378
0.5199004975124378 x 100 = 51.99%