-90.89% is the change from 494 to 45
Calculation steps:
[( 45 - 494 ) ÷ 494] x 100 = -90.89%
Formula
Percentage change = [(45 - 494) / 494] x 100
Subtract the new number by the original number
45 - 494 = -449
-449 ÷ 494 = -0.9089068825910931
-0.9089068825910931 x 100 = -90.89%