67.1% is the change from 307 to 513
Calculation steps:
[( 513 - 307 ) ÷ 307] x 100 = 67.1%
Formula
Percentage change = [(513 - 307) / 307] x 100
Subtract the new number by the original number
513 - 307 = 206
206 ÷ 307 = 0.6710097719869706
0.6710097719869706 x 100 = 67.1%