-17.86% is the change from 756 to 621
Calculation steps:
[( 621 - 756 ) ÷ 756] x 100 = -17.86%
Formula
Percentage change = [(621 - 756) / 756] x 100
Subtract the new number by the original number
621 - 756 = -135
-135 ÷ 756 = -0.17857142857142858
-0.17857142857142858 x 100 = -17.86%