-25.05% is the change from 503 to 377
Calculation steps:
[( 377 - 503 ) ÷ 503] x 100 = -25.05%
Formula
Percentage change = [(377 - 503) / 503] x 100
Subtract the new number by the original number
377 - 503 = -126
-126 ÷ 503 = -0.2504970178926441
-0.2504970178926441 x 100 = -25.05%