-48.41% is the change from 661 to 341
Calculation steps:
[( 341 - 661 ) ÷ 661] x 100 = -48.41%
Formula
Percentage change = [(341 - 661) / 661] x 100
Subtract the new number by the original number
341 - 661 = -320
-320 ÷ 661 = -0.48411497730711045
-0.48411497730711045 x 100 = -48.41%