-77.7% is the change from 870 to 194
Calculation steps:
[( 194 - 870 ) ÷ 870] x 100 = -77.7%
Formula
Percentage change = [(194 - 870) / 870] x 100
Subtract the new number by the original number
194 - 870 = -676
-676 ÷ 870 = -0.7770114942528735
-0.7770114942528735 x 100 = -77.7%