-92.74% is the change from 620 to 45
Calculation steps:
[( 45 - 620 ) ÷ 620] x 100 = -92.74%
Formula
Percentage change = [(45 - 620) / 620] x 100
Subtract the new number by the original number
45 - 620 = -575
-575 ÷ 620 = -0.9274193548387096
-0.9274193548387096 x 100 = -92.74%