-87.43% is the change from 334 to 42
Calculation steps:
[( 42 - 334 ) ÷ 334] x 100 = -87.43%
Formula
Percentage change = [(42 - 334) / 334] x 100
Subtract the new number by the original number
42 - 334 = -292
-292 ÷ 334 = -0.874251497005988
-0.874251497005988 x 100 = -87.43%