-63.68% is the change from 647 to 235
Calculation steps:
[( 235 - 647 ) ÷ 647] x 100 = -63.68%
Formula
Percentage change = [(235 - 647) / 647] x 100
Subtract the new number by the original number
235 - 647 = -412
-412 ÷ 647 = -0.6367851622874807
-0.6367851622874807 x 100 = -63.68%