394.78% is the change from 134 to 663
Calculation steps:
[( 663 - 134 ) ÷ 134] x 100 = 394.78%
Formula
Percentage change = [(663 - 134) / 134] x 100
Subtract the new number by the original number
663 - 134 = 529
529 ÷ 134 = 3.9477611940298507
3.9477611940298507 x 100 = 394.78%