-3.78% is the change from 715 to 688
Calculation steps:
[( 688 - 715 ) ÷ 715] x 100 = -3.78%
Formula
Percentage change = [(688 - 715) / 715] x 100
Subtract the new number by the original number
688 - 715 = -27
-27 ÷ 715 = -0.03776223776223776
-0.03776223776223776 x 100 = -3.78%