-47.05% is the change from 661 to 350
Calculation steps:
[( 350 - 661 ) ÷ 661] x 100 = -47.05%
Formula
Percentage change = [(350 - 661) / 661] x 100
Subtract the new number by the original number
350 - 661 = -311
-311 ÷ 661 = -0.47049924357034795
-0.47049924357034795 x 100 = -47.05%