-84.64% is the change from 345 to 53
Calculation steps:
[( 53 - 345 ) ÷ 345] x 100 = -84.64%
Formula
Percentage change = [(53 - 345) / 345] x 100
Subtract the new number by the original number
53 - 345 = -292
-292 ÷ 345 = -0.8463768115942029
-0.8463768115942029 x 100 = -84.64%