-50.36% is the change from 689 to 342
Calculation steps:
[( 342 - 689 ) ÷ 689] x 100 = -50.36%
Formula
Percentage change = [(342 - 689) / 689] x 100
Subtract the new number by the original number
342 - 689 = -347
-347 ÷ 689 = -0.5036284470246735
-0.5036284470246735 x 100 = -50.36%