-77.27% is the change from 396 to 90
Calculation steps:
[( 90 - 396 ) ÷ 396] x 100 = -77.27%
Formula
Percentage change = [(90 - 396) / 396] x 100
Subtract the new number by the original number
90 - 396 = -306
-306 ÷ 396 = -0.7727272727272727
-0.7727272727272727 x 100 = -77.27%