-78.9% is the change from 346 to 73
Calculation steps:
[( 73 - 346 ) ÷ 346] x 100 = -78.9%
Formula
Percentage change = [(73 - 346) / 346] x 100
Subtract the new number by the original number
73 - 346 = -273
-273 ÷ 346 = -0.7890173410404624
-0.7890173410404624 x 100 = -78.9%