-78.07% is the change from 342 to 75
Calculation steps:
[( 75 - 342 ) ÷ 342] x 100 = -78.07%
Formula
Percentage change = [(75 - 342) / 342] x 100
Subtract the new number by the original number
75 - 342 = -267
-267 ÷ 342 = -0.7807017543859649
-0.7807017543859649 x 100 = -78.07%