-22.63% is the change from 990 to 766
Calculation steps:
[( 766 - 990 ) ÷ 990] x 100 = -22.63%
Formula
Percentage change = [(766 - 990) / 990] x 100
Subtract the new number by the original number
766 - 990 = -224
-224 ÷ 990 = -0.22626262626262628
-0.22626262626262628 x 100 = -22.63%