-17.16% is the change from 647 to 536
Calculation steps:
[( 536 - 647 ) ÷ 647] x 100 = -17.16%
Formula
Percentage change = [(536 - 647) / 647] x 100
Subtract the new number by the original number
536 - 647 = -111
-111 ÷ 647 = -0.17156105100463678
-0.17156105100463678 x 100 = -17.16%