-57.9% is the change from 620 to 261
Calculation steps:
[( 261 - 620 ) ÷ 620] x 100 = -57.9%
Formula
Percentage change = [(261 - 620) / 620] x 100
Subtract the new number by the original number
261 - 620 = -359
-359 ÷ 620 = -0.5790322580645161
-0.5790322580645161 x 100 = -57.9%