-49.02% is the change from 661 to 337
Calculation steps:
[( 337 - 661 ) ÷ 661] x 100 = -49.02%
Formula
Percentage change = [(337 - 661) / 661] x 100
Subtract the new number by the original number
337 - 661 = -324
-324 ÷ 661 = -0.49016641452344933
-0.49016641452344933 x 100 = -49.02%