51.38% is the change from 506 to 766
Calculation steps:
[( 766 - 506 ) ÷ 506] x 100 = 51.38%
Formula
Percentage change = [(766 - 506) / 506] x 100
Subtract the new number by the original number
766 - 506 = 260
260 ÷ 506 = 0.5138339920948617
0.5138339920948617 x 100 = 51.38%