-64.21% is the change from 665 to 238
Calculation steps:
[( 238 - 665 ) ÷ 665] x 100 = -64.21%
Formula
Percentage change = [(238 - 665) / 665] x 100
Subtract the new number by the original number
238 - 665 = -427
-427 ÷ 665 = -0.6421052631578947
-0.6421052631578947 x 100 = -64.21%