-7.89% is the change from 938 to 864
Calculation steps:
[( 864 - 938 ) ÷ 938] x 100 = -7.89%
Formula
Percentage change = [(864 - 938) / 938] x 100
Subtract the new number by the original number
864 - 938 = -74
-74 ÷ 938 = -0.07889125799573561
-0.07889125799573561 x 100 = -7.89%