-27.2% is the change from 945 to 688
Calculation steps:
[( 688 - 945 ) ÷ 945] x 100 = -27.2%
Formula
Percentage change = [(688 - 945) / 945] x 100
Subtract the new number by the original number
688 - 945 = -257
-257 ÷ 945 = -0.27195767195767195
-0.27195767195767195 x 100 = -27.2%