-92.86% is the change from 840 to 60
Calculation steps:
[( 60 - 840 ) ÷ 840] x 100 = -92.86%
Formula
Percentage change = [(60 - 840) / 840] x 100
Subtract the new number by the original number
60 - 840 = -780
-780 ÷ 840 = -0.9285714285714286
-0.9285714285714286 x 100 = -92.86%