-12.38% is the change from 977 to 856
Calculation steps:
[( 856 - 977 ) ÷ 977] x 100 = -12.38%
Formula
Percentage change = [(856 - 977) / 977] x 100
Subtract the new number by the original number
856 - 977 = -121
-121 ÷ 977 = -0.12384851586489252
-0.12384851586489252 x 100 = -12.38%