-90.87% is the change from 493 to 45
Calculation steps:
[( 45 - 493 ) ÷ 493] x 100 = -90.87%
Formula
Percentage change = [(45 - 493) / 493] x 100
Subtract the new number by the original number
45 - 493 = -448
-448 ÷ 493 = -0.9087221095334685
-0.9087221095334685 x 100 = -90.87%