-20.18% is the change from 768 to 613
Calculation steps:
[( 613 - 768 ) ÷ 768] x 100 = -20.18%
Formula
Percentage change = [(613 - 768) / 768] x 100
Subtract the new number by the original number
613 - 768 = -155
-155 ÷ 768 = -0.20182291666666666
-0.20182291666666666 x 100 = -20.18%