-78.43% is the change from 343 to 74
Calculation steps:
[( 74 - 343 ) ÷ 343] x 100 = -78.43%
Formula
Percentage change = [(74 - 343) / 343] x 100
Subtract the new number by the original number
74 - 343 = -269
-269 ÷ 343 = -0.7842565597667639
-0.7842565597667639 x 100 = -78.43%