53.1% is the change from 435 to 666
Calculation steps:
[( 666 - 435 ) ÷ 435] x 100 = 53.1%
Formula
Percentage change = [(666 - 435) / 435] x 100
Subtract the new number by the original number
666 - 435 = 231
231 ÷ 435 = 0.5310344827586206
0.5310344827586206 x 100 = 53.1%