-27.88% is the change from 893 to 644
Calculation steps:
[( 644 - 893 ) ÷ 893] x 100 = -27.88%
Formula
Percentage change = [(644 - 893) / 893] x 100
Subtract the new number by the original number
644 - 893 = -249
-249 ÷ 893 = -0.2788353863381859
-0.2788353863381859 x 100 = -27.88%