-89.42% is the change from 690 to 73
Calculation steps:
[( 73 - 690 ) ÷ 690] x 100 = -89.42%
Formula
Percentage change = [(73 - 690) / 690] x 100
Subtract the new number by the original number
73 - 690 = -617
-617 ÷ 690 = -0.8942028985507247
-0.8942028985507247 x 100 = -89.42%