67.31% is the change from 312 to 522
Calculation steps:
[( 522 - 312 ) ÷ 312] x 100 = 67.31%
Formula
Percentage change = [(522 - 312) / 312] x 100
Subtract the new number by the original number
522 - 312 = 210
210 ÷ 312 = 0.6730769230769231
0.6730769230769231 x 100 = 67.31%