-19.06% is the change from 766 to 620
Calculation steps:
[( 620 - 766 ) ÷ 766] x 100 = -19.06%
Formula
Percentage change = [(620 - 766) / 766] x 100
Subtract the new number by the original number
620 - 766 = -146
-146 ÷ 766 = -0.1906005221932115
-0.1906005221932115 x 100 = -19.06%