-84.45% is the change from 778 to 121
Calculation steps:
[( 121 - 778 ) ÷ 778] x 100 = -84.45%
Formula
Percentage change = [(121 - 778) / 778] x 100
Subtract the new number by the original number
121 - 778 = -657
-657 ÷ 778 = -0.8444730077120822
-0.8444730077120822 x 100 = -84.45%