-59.25% is the change from 665 to 271
Calculation steps:
[( 271 - 665 ) ÷ 665] x 100 = -59.25%
Formula
Percentage change = [(271 - 665) / 665] x 100
Subtract the new number by the original number
271 - 665 = -394
-394 ÷ 665 = -0.5924812030075188
-0.5924812030075188 x 100 = -59.25%