-83.08% is the change from 934 to 158
Calculation steps:
[( 158 - 934 ) ÷ 934] x 100 = -83.08%
Formula
Percentage change = [(158 - 934) / 934] x 100
Subtract the new number by the original number
158 - 934 = -776
-776 ÷ 934 = -0.8308351177730193
-0.8308351177730193 x 100 = -83.08%