69.23% is the change from 312 to 528
Calculation steps:
[( 528 - 312 ) ÷ 312] x 100 = 69.23%
Formula
Percentage change = [(528 - 312) / 312] x 100
Subtract the new number by the original number
528 - 312 = 216
216 ÷ 312 = 0.6923076923076923
0.6923076923076923 x 100 = 69.23%