537.4% is the change from 123 to 784
Calculation steps:
[( 784 - 123 ) ÷ 123] x 100 = 537.4%
Formula
Percentage change = [(784 - 123) / 123] x 100
Subtract the new number by the original number
784 - 123 = 661
661 ÷ 123 = 5.373983739837398
5.373983739837398 x 100 = 537.4%