-28.12% is the change from 921 to 662
Calculation steps:
[( 662 - 921 ) ÷ 921] x 100 = -28.12%
Formula
Percentage change = [(662 - 921) / 921] x 100
Subtract the new number by the original number
662 - 921 = -259
-259 ÷ 921 = -0.28121606948968514
-0.28121606948968514 x 100 = -28.12%