51.09% is the change from 505 to 763
Calculation steps:
[( 763 - 505 ) ÷ 505] x 100 = 51.09%
Formula
Percentage change = [(763 - 505) / 505] x 100
Subtract the new number by the original number
763 - 505 = 258
258 ÷ 505 = 0.5108910891089109
0.5108910891089109 x 100 = 51.09%