-4.21% is the change from 902 to 864
Calculation steps:
[( 864 - 902 ) ÷ 902] x 100 = -4.21%
Formula
Percentage change = [(864 - 902) / 902] x 100
Subtract the new number by the original number
864 - 902 = -38
-38 ÷ 902 = -0.04212860310421286
-0.04212860310421286 x 100 = -4.21%