-77.6% is the change from 835 to 187
Calculation steps:
[( 187 - 835 ) ÷ 835] x 100 = -77.6%
Formula
Percentage change = [(187 - 835) / 835] x 100
Subtract the new number by the original number
187 - 835 = -648
-648 ÷ 835 = -0.7760479041916167
-0.7760479041916167 x 100 = -77.6%