-34% is the change from 650 to 429
Calculation steps:
[( 429 - 650 ) ÷ 650] x 100 = -34%
Formula
Percentage change = [(429 - 650) / 650] x 100
Subtract the new number by the original number
429 - 650 = -221
-221 ÷ 650 = -0.34
-0.34 x 100 = -34%
Example