-54.63% is the change from 831 to 377
Calculation steps:
[( 377 - 831 ) ÷ 831] x 100 = -54.63%
Formula
Percentage change = [(377 - 831) / 831] x 100
Subtract the new number by the original number
377 - 831 = -454
-454 ÷ 831 = -0.54632972322503
-0.54632972322503 x 100 = -54.63%