-63.99% is the change from 661 to 238
Calculation steps:
[( 238 - 661 ) ÷ 661] x 100 = -63.99%
Formula
Percentage change = [(238 - 661) / 661] x 100
Subtract the new number by the original number
238 - 661 = -423
-423 ÷ 661 = -0.6399394856278366
-0.6399394856278366 x 100 = -63.99%