-91.21% is the change from 478 to 42
Calculation steps:
[( 42 - 478 ) ÷ 478] x 100 = -91.21%
Formula
Percentage change = [(42 - 478) / 478] x 100
Subtract the new number by the original number
42 - 478 = -436
-436 ÷ 478 = -0.9121338912133892
-0.9121338912133892 x 100 = -91.21%