-5.04% is the change from 397 to 377
Calculation steps:
[( 377 - 397 ) ÷ 397] x 100 = -5.04%
Formula
Percentage change = [(377 - 397) / 397] x 100
Subtract the new number by the original number
377 - 397 = -20
-20 ÷ 397 = -0.05037783375314862
-0.05037783375314862 x 100 = -5.04%