-27.17% is the change from 876 to 638
Calculation steps:
[( 638 - 876 ) ÷ 876] x 100 = -27.17%
Formula
Percentage change = [(638 - 876) / 876] x 100
Subtract the new number by the original number
638 - 876 = -238
-238 ÷ 876 = -0.271689497716895
-0.271689497716895 x 100 = -27.17%