-3.16% is the change from 917 to 888
Calculation steps:
[( 888 - 917 ) ÷ 917] x 100 = -3.16%
Formula
Percentage change = [(888 - 917) / 917] x 100
Subtract the new number by the original number
888 - 917 = -29
-29 ÷ 917 = -0.03162486368593239
-0.03162486368593239 x 100 = -3.16%