-57.3% is the change from 623 to 266
Calculation steps:
[( 266 - 623 ) ÷ 623] x 100 = -57.3%
Formula
Percentage change = [(266 - 623) / 623] x 100
Subtract the new number by the original number
266 - 623 = -357
-357 ÷ 623 = -0.5730337078651685
-0.5730337078651685 x 100 = -57.3%