-35.39% is the change from 647 to 418
Calculation steps:
[( 418 - 647 ) ÷ 647] x 100 = -35.39%
Formula
Percentage change = [(418 - 647) / 647] x 100
Subtract the new number by the original number
418 - 647 = -229
-229 ÷ 647 = -0.35394126738794435
-0.35394126738794435 x 100 = -35.39%