-11.7% is the change from 855 to 755
Calculation steps:
[( 755 - 855 ) ÷ 855] x 100 = -11.7%
Formula
Percentage change = [(755 - 855) / 855] x 100
Subtract the new number by the original number
755 - 855 = -100
-100 ÷ 855 = -0.11695906432748537
-0.11695906432748537 x 100 = -11.7%