521.43% is the change from 126 to 783
Calculation steps:
[( 783 - 126 ) ÷ 126] x 100 = 521.43%
Formula
Percentage change = [(783 - 126) / 126] x 100
Subtract the new number by the original number
783 - 126 = 657
657 ÷ 126 = 5.214285714285714
5.214285714285714 x 100 = 521.43%