-5.08% is the change from 885 to 840
Calculation steps:
[( 840 - 885 ) ÷ 885] x 100 = -5.08%
Formula
Percentage change = [(840 - 885) / 885] x 100
Subtract the new number by the original number
840 - 885 = -45
-45 ÷ 885 = -0.05084745762711865
-0.05084745762711865 x 100 = -5.08%