-79.96% is the change from 449 to 90
Calculation steps:
[( 90 - 449 ) ÷ 449] x 100 = -79.96%
Formula
Percentage change = [(90 - 449) / 449] x 100
Subtract the new number by the original number
90 - 449 = -359
-359 ÷ 449 = -0.799554565701559
-0.799554565701559 x 100 = -79.96%