-28.21% is the change from 897 to 644
Calculation steps:
[( 644 - 897 ) ÷ 897] x 100 = -28.21%
Formula
Percentage change = [(644 - 897) / 897] x 100
Subtract the new number by the original number
644 - 897 = -253
-253 ÷ 897 = -0.28205128205128205
-0.28205128205128205 x 100 = -28.21%