-28.49% is the change from 895 to 640
Calculation steps:
[( 640 - 895 ) ÷ 895] x 100 = -28.49%
Formula
Percentage change = [(640 - 895) / 895] x 100
Subtract the new number by the original number
640 - 895 = -255
-255 ÷ 895 = -0.2849162011173184
-0.2849162011173184 x 100 = -28.49%