-32.57% is the change from 955 to 644
Calculation steps:
[( 644 - 955 ) ÷ 955] x 100 = -32.57%
Formula
Percentage change = [(644 - 955) / 955] x 100
Subtract the new number by the original number
644 - 955 = -311
-311 ÷ 955 = -0.3256544502617801
-0.3256544502617801 x 100 = -32.57%