68.08% is the change from 307 to 516
Calculation steps:
[( 516 - 307 ) ÷ 307] x 100 = 68.08%
Formula
Percentage change = [(516 - 307) / 307] x 100
Subtract the new number by the original number
516 - 307 = 209
209 ÷ 307 = 0.6807817589576547
0.6807817589576547 x 100 = 68.08%