-64.61% is the change from 647 to 229
Calculation steps:
[( 229 - 647 ) ÷ 647] x 100 = -64.61%
Formula
Percentage change = [(229 - 647) / 647] x 100
Subtract the new number by the original number
229 - 647 = -418
-418 ÷ 647 = -0.6460587326120556
-0.6460587326120556 x 100 = -64.61%