-78.65% is the change from 342 to 73
Calculation steps:
[( 73 - 342 ) ÷ 342] x 100 = -78.65%
Formula
Percentage change = [(73 - 342) / 342] x 100
Subtract the new number by the original number
73 - 342 = -269
-269 ÷ 342 = -0.7865497076023392
-0.7865497076023392 x 100 = -78.65%