-7.83% is the change from 702 to 647
Calculation steps:
[( 647 - 702 ) ÷ 702] x 100 = -7.83%
Formula
Percentage change = [(647 - 702) / 702] x 100
Subtract the new number by the original number
647 - 702 = -55
-55 ÷ 702 = -0.07834757834757834
-0.07834757834757834 x 100 = -7.83%