81.42% is the change from 506 to 918
Calculation steps:
[( 918 - 506 ) ÷ 506] x 100 = 81.42%
Formula
Percentage change = [(918 - 506) / 506] x 100
Subtract the new number by the original number
918 - 506 = 412
412 ÷ 506 = 0.8142292490118577
0.8142292490118577 x 100 = 81.42%