-17.77% is the change from 647 to 532
Calculation steps:
[( 532 - 647 ) ÷ 647] x 100 = -17.77%
Formula
Percentage change = [(532 - 647) / 647] x 100
Subtract the new number by the original number
532 - 647 = -115
-115 ÷ 647 = -0.1777434312210201
-0.1777434312210201 x 100 = -17.77%