-77.11% is the change from 817 to 187
Calculation steps:
[( 187 - 817 ) ÷ 817] x 100 = -77.11%
Formula
Percentage change = [(187 - 817) / 817] x 100
Subtract the new number by the original number
187 - 817 = -630
-630 ÷ 817 = -0.7711138310893513
-0.7711138310893513 x 100 = -77.11%