-60.71% is the change from 878 to 345
Calculation steps:
[( 345 - 878 ) ÷ 878] x 100 = -60.71%
Formula
Percentage change = [(345 - 878) / 878] x 100
Subtract the new number by the original number
345 - 878 = -533
-533 ÷ 878 = -0.6070615034168565
-0.6070615034168565 x 100 = -60.71%