-69.25% is the change from 865 to 266
Calculation steps:
[( 266 - 865 ) ÷ 865] x 100 = -69.25%
Formula
Percentage change = [(266 - 865) / 865] x 100
Subtract the new number by the original number
266 - 865 = -599
-599 ÷ 865 = -0.692485549132948
-0.692485549132948 x 100 = -69.25%