-83.7% is the change from 920 to 150
Calculation steps:
[( 150 - 920 ) ÷ 920] x 100 = -83.7%
Formula
Percentage change = [(150 - 920) / 920] x 100
Subtract the new number by the original number
150 - 920 = -770
-770 ÷ 920 = -0.8369565217391305
-0.8369565217391305 x 100 = -83.7%