-72.8% is the change from 647 to 176
Calculation steps:
[( 176 - 647 ) ÷ 647] x 100 = -72.8%
Formula
Percentage change = [(176 - 647) / 647] x 100
Subtract the new number by the original number
176 - 647 = -471
-471 ÷ 647 = -0.7279752704791345
-0.7279752704791345 x 100 = -72.8%