-33.02% is the change from 957 to 641
Calculation steps:
[( 641 - 957 ) ÷ 957] x 100 = -33.02%
Formula
Percentage change = [(641 - 957) / 957] x 100
Subtract the new number by the original number
641 - 957 = -316
-316 ÷ 957 = -0.33019853709508884
-0.33019853709508884 x 100 = -33.02%