1438.1% is the change from 42 to 646
Calculation steps:
[( 646 - 42 ) ÷ 42] x 100 = 1438.1%
Formula
Percentage change = [(646 - 42) / 42] x 100
Subtract the new number by the original number
646 - 42 = 604
604 ÷ 42 = 14.380952380952381
14.380952380952381 x 100 = 1438.1%