81.07% is the change from 507 to 918
Calculation steps:
[( 918 - 507 ) ÷ 507] x 100 = 81.07%
Formula
Percentage change = [(918 - 507) / 507] x 100
Subtract the new number by the original number
918 - 507 = 411
411 ÷ 507 = 0.8106508875739645
0.8106508875739645 x 100 = 81.07%