-58.51% is the change from 646 to 268
Calculation steps:
[( 268 - 646 ) ÷ 646] x 100 = -58.51%
Formula
Percentage change = [(268 - 646) / 646] x 100
Subtract the new number by the original number
268 - 646 = -378
-378 ÷ 646 = -0.5851393188854489
-0.5851393188854489 x 100 = -58.51%