-62.38% is the change from 646 to 243
Calculation steps:
[( 243 - 646 ) ÷ 646] x 100 = -62.38%
Formula
Percentage change = [(243 - 646) / 646] x 100
Subtract the new number by the original number
243 - 646 = -403
-403 ÷ 646 = -0.6238390092879257
-0.6238390092879257 x 100 = -62.38%