70.16% is the change from 305 to 519
Calculation steps:
[( 519 - 305 ) ÷ 305] x 100 = 70.16%
Formula
Percentage change = [(519 - 305) / 305] x 100
Subtract the new number by the original number
519 - 305 = 214
214 ÷ 305 = 0.7016393442622951
0.7016393442622951 x 100 = 70.16%