-60.75% is the change from 879 to 345
Calculation steps:
[( 345 - 879 ) ÷ 879] x 100 = -60.75%
Formula
Percentage change = [(345 - 879) / 879] x 100
Subtract the new number by the original number
345 - 879 = -534
-534 ÷ 879 = -0.6075085324232082
-0.6075085324232082 x 100 = -60.75%