-6.5% is the change from 692 to 647
Calculation steps:
[( 647 - 692 ) ÷ 692] x 100 = -6.5%
Formula
Percentage change = [(647 - 692) / 692] x 100
Subtract the new number by the original number
647 - 692 = -45
-45 ÷ 692 = -0.06502890173410404
-0.06502890173410404 x 100 = -6.5%