-4.43% is the change from 677 to 647
Calculation steps:
[( 647 - 677 ) ÷ 677] x 100 = -4.43%
Formula
Percentage change = [(647 - 677) / 677] x 100
Subtract the new number by the original number
647 - 677 = -30
-30 ÷ 677 = -0.04431314623338257
-0.04431314623338257 x 100 = -4.43%