-2.66% is the change from 902 to 878
Calculation steps:
[( 878 - 902 ) ÷ 902] x 100 = -2.66%
Formula
Percentage change = [(878 - 902) / 902] x 100
Subtract the new number by the original number
878 - 902 = -24
-24 ÷ 902 = -0.026607538802660754
-0.026607538802660754 x 100 = -2.66%