50% is the change from 514 to 771
Calculation steps:
[( 771 - 514 ) ÷ 514] x 100 = 50%
Formula
Percentage change = [(771 - 514) / 514] x 100
Subtract the new number by the original number
771 - 514 = 257
257 ÷ 514 = 0.5
0.5 x 100 = 50%
Example