750% is the change from 78 to 663
Calculation steps:
[( 663 - 78 ) ÷ 78] x 100 = 750%
Formula
Percentage change = [(663 - 78) / 78] x 100
Subtract the new number by the original number
663 - 78 = 585
585 ÷ 78 = 7.5
7.5 x 100 = 750%
Example