-58.6% is the change from 645 to 267
Calculation steps:
[( 267 - 645 ) ÷ 645] x 100 = -58.6%
Formula
Percentage change = [(267 - 645) / 645] x 100
Subtract the new number by the original number
267 - 645 = -378
-378 ÷ 645 = -0.586046511627907
-0.586046511627907 x 100 = -58.6%