-63.93% is the change from 646 to 233
Calculation steps:
[( 233 - 646 ) ÷ 646] x 100 = -63.93%
Formula
Percentage change = [(233 - 646) / 646] x 100
Subtract the new number by the original number
233 - 646 = -413
-413 ÷ 646 = -0.6393188854489165
-0.6393188854489165 x 100 = -63.93%