-27.72% is the change from 927 to 670
Calculation steps:
[( 670 - 927 ) ÷ 927] x 100 = -27.72%
Formula
Percentage change = [(670 - 927) / 927] x 100
Subtract the new number by the original number
670 - 927 = -257
-257 ÷ 927 = -0.2772384034519957
-0.2772384034519957 x 100 = -27.72%