-34.92% is the change from 650 to 423
Calculation steps:
[( 423 - 650 ) ÷ 650] x 100 = -34.92%
Formula
Percentage change = [(423 - 650) / 650] x 100
Subtract the new number by the original number
423 - 650 = -227
-227 ÷ 650 = -0.34923076923076923
-0.34923076923076923 x 100 = -34.92%