-84.2% is the change from 766 to 121
Calculation steps:
[( 121 - 766 ) ÷ 766] x 100 = -84.2%
Formula
Percentage change = [(121 - 766) / 766] x 100
Subtract the new number by the original number
121 - 766 = -645
-645 ÷ 766 = -0.8420365535248042
-0.8420365535248042 x 100 = -84.2%