50.99% is the change from 506 to 764
Calculation steps:
[( 764 - 506 ) ÷ 506] x 100 = 50.99%
Formula
Percentage change = [(764 - 506) / 506] x 100
Subtract the new number by the original number
764 - 506 = 258
258 ÷ 506 = 0.5098814229249012
0.5098814229249012 x 100 = 50.99%