-90.45% is the change from 921 to 88
Calculation steps:
[( 88 - 921 ) ÷ 921] x 100 = -90.45%
Formula
Percentage change = [(88 - 921) / 921] x 100
Subtract the new number by the original number
88 - 921 = -833
-833 ÷ 921 = -0.9044516829533116
-0.9044516829533116 x 100 = -90.45%