-23.86% is the change from 880 to 670
Calculation steps:
[( 670 - 880 ) ÷ 880] x 100 = -23.86%
Formula
Percentage change = [(670 - 880) / 880] x 100
Subtract the new number by the original number
670 - 880 = -210
-210 ÷ 880 = -0.23863636363636365
-0.23863636363636365 x 100 = -23.86%