-26.61% is the change from 620 to 455
Calculation steps:
[( 455 - 620 ) ÷ 620] x 100 = -26.61%
Formula
Percentage change = [(455 - 620) / 620] x 100
Subtract the new number by the original number
455 - 620 = -165
-165 ÷ 620 = -0.2661290322580645
-0.2661290322580645 x 100 = -26.61%