-90.79% is the change from 456 to 42
Calculation steps:
[( 42 - 456 ) ÷ 456] x 100 = -90.79%
Formula
Percentage change = [(42 - 456) / 456] x 100
Subtract the new number by the original number
42 - 456 = -414
-414 ÷ 456 = -0.9078947368421053
-0.9078947368421053 x 100 = -90.79%