-90.21% is the change from 919 to 90
Calculation steps:
[( 90 - 919 ) ÷ 919] x 100 = -90.21%
Formula
Percentage change = [(90 - 919) / 919] x 100
Subtract the new number by the original number
90 - 919 = -829
-829 ÷ 919 = -0.9020674646354734
-0.9020674646354734 x 100 = -90.21%