-19.5% is the change from 677 to 545
Calculation steps:
[( 545 - 677 ) ÷ 677] x 100 = -19.5%
Formula
Percentage change = [(545 - 677) / 677] x 100
Subtract the new number by the original number
545 - 677 = -132
-132 ÷ 677 = -0.19497784342688332
-0.19497784342688332 x 100 = -19.5%