-4.15% is the change from 915 to 877
Calculation steps:
[( 877 - 915 ) ÷ 915] x 100 = -4.15%
Formula
Percentage change = [(877 - 915) / 915] x 100
Subtract the new number by the original number
877 - 915 = -38
-38 ÷ 915 = -0.041530054644808745
-0.041530054644808745 x 100 = -4.15%