65.38% is the change from 312 to 516
Calculation steps:
[( 516 - 312 ) ÷ 312] x 100 = 65.38%
Formula
Percentage change = [(516 - 312) / 312] x 100
Subtract the new number by the original number
516 - 312 = 204
204 ÷ 312 = 0.6538461538461539
0.6538461538461539 x 100 = 65.38%