-90.07% is the change from 906 to 90
Calculation steps:
[( 90 - 906 ) ÷ 906] x 100 = -90.07%
Formula
Percentage change = [(90 - 906) / 906] x 100
Subtract the new number by the original number
90 - 906 = -816
-816 ÷ 906 = -0.9006622516556292
-0.9006622516556292 x 100 = -90.07%