-2.58% is the change from 387 to 377
Calculation steps:
[( 377 - 387 ) ÷ 387] x 100 = -2.58%
Formula
Percentage change = [(377 - 387) / 387] x 100
Subtract the new number by the original number
377 - 387 = -10
-10 ÷ 387 = -0.025839793281653745
-0.025839793281653745 x 100 = -2.58%