-89.7% is the change from 874 to 90
Calculation steps:
[( 90 - 874 ) ÷ 874] x 100 = -89.7%
Formula
Percentage change = [(90 - 874) / 874] x 100
Subtract the new number by the original number
90 - 874 = -784
-784 ÷ 874 = -0.897025171624714
-0.897025171624714 x 100 = -89.7%