66.98% is the change from 318 to 531
Calculation steps:
[( 531 - 318 ) ÷ 318] x 100 = 66.98%
Formula
Percentage change = [(531 - 318) / 318] x 100
Subtract the new number by the original number
531 - 318 = 213
213 ÷ 318 = 0.6698113207547169
0.6698113207547169 x 100 = 66.98%