-50.46% is the change from 650 to 322
Calculation steps:
[( 322 - 650 ) ÷ 650] x 100 = -50.46%
Formula
Percentage change = [(322 - 650) / 650] x 100
Subtract the new number by the original number
322 - 650 = -328
-328 ÷ 650 = -0.5046153846153846
-0.5046153846153846 x 100 = -50.46%