-91.5% is the change from 494 to 42
Calculation steps:
[( 42 - 494 ) ÷ 494] x 100 = -91.5%
Formula
Percentage change = [(42 - 494) / 494] x 100
Subtract the new number by the original number
42 - 494 = -452
-452 ÷ 494 = -0.9149797570850202
-0.9149797570850202 x 100 = -91.5%