-20.53% is the change from 677 to 538
Calculation steps:
[( 538 - 677 ) ÷ 677] x 100 = -20.53%
Formula
Percentage change = [(538 - 677) / 677] x 100
Subtract the new number by the original number
538 - 677 = -139
-139 ÷ 677 = -0.20531757754800592
-0.20531757754800592 x 100 = -20.53%