-26.71% is the change from 876 to 642
Calculation steps:
[( 642 - 876 ) ÷ 876] x 100 = -26.71%
Formula
Percentage change = [(642 - 876) / 876] x 100
Subtract the new number by the original number
642 - 876 = -234
-234 ÷ 876 = -0.2671232876712329
-0.2671232876712329 x 100 = -26.71%