0.78% is the change from 511 to 515
Calculation steps:
[( 515 - 511 ) ÷ 511] x 100 = 0.78%
Formula
Percentage change = [(515 - 511) / 511] x 100
Subtract the new number by the original number
515 - 511 = 4
4 ÷ 511 = 0.007827788649706457
0.007827788649706457 x 100 = 0.78%