421.77% is the change from 124 to 647
Calculation steps:
[( 647 - 124 ) ÷ 124] x 100 = 421.77%
Formula
Percentage change = [(647 - 124) / 124] x 100
Subtract the new number by the original number
647 - 124 = 523
523 ÷ 124 = 4.217741935483871
4.217741935483871 x 100 = 421.77%