-77.07% is the change from 964 to 221
Calculation steps:
[( 221 - 964 ) ÷ 964] x 100 = -77.07%
Formula
Percentage change = [(221 - 964) / 964] x 100
Subtract the new number by the original number
221 - 964 = -743
-743 ÷ 964 = -0.770746887966805
-0.770746887966805 x 100 = -77.07%