-92.65% is the change from 340 to 25
Calculation steps:
[( 25 - 340 ) ÷ 340] x 100 = -92.65%
Formula
Percentage change = [(25 - 340) / 340] x 100
Subtract the new number by the original number
25 - 340 = -315
-315 ÷ 340 = -0.9264705882352942
-0.9264705882352942 x 100 = -92.65%