47.75% is the change from 511 to 755
Calculation steps:
[( 755 - 511 ) ÷ 511] x 100 = 47.75%
Formula
Percentage change = [(755 - 511) / 511] x 100
Subtract the new number by the original number
755 - 511 = 244
244 ÷ 511 = 0.4774951076320939
0.4774951076320939 x 100 = 47.75%