-83.92% is the change from 964 to 155
Calculation steps:
[( 155 - 964 ) ÷ 964] x 100 = -83.92%
Formula
Percentage change = [(155 - 964) / 964] x 100
Subtract the new number by the original number
155 - 964 = -809
-809 ÷ 964 = -0.8392116182572614
-0.8392116182572614 x 100 = -83.92%