-29.36% is the change from 109 to 77
Calculation steps:
[( 77 - 109 ) ÷ 109] x 100 = -29.36%
Formula
Percentage change = [(77 - 109) / 109] x 100
Subtract the new number by the original number
77 - 109 = -32
-32 ÷ 109 = -0.29357798165137616
-0.29357798165137616 x 100 = -29.36%