-63.21% is the change from 647 to 238
Calculation steps:
[( 238 - 647 ) ÷ 647] x 100 = -63.21%
Formula
Percentage change = [(238 - 647) / 647] x 100
Subtract the new number by the original number
238 - 647 = -409
-409 ÷ 647 = -0.6321483771251932
-0.6321483771251932 x 100 = -63.21%