77.67% is the change from 506 to 899
Calculation steps:
[( 899 - 506 ) ÷ 506] x 100 = 77.67%
Formula
Percentage change = [(899 - 506) / 506] x 100
Subtract the new number by the original number
899 - 506 = 393
393 ÷ 506 = 0.7766798418972332
0.7766798418972332 x 100 = 77.67%