-90.31% is the change from 929 to 90
Calculation steps:
[( 90 - 929 ) ÷ 929] x 100 = -90.31%
Formula
Percentage change = [(90 - 929) / 929] x 100
Subtract the new number by the original number
90 - 929 = -839
-839 ÷ 929 = -0.9031216361679225
-0.9031216361679225 x 100 = -90.31%