-70.57% is the change from 751 to 221
Calculation steps:
[( 221 - 751 ) ÷ 751] x 100 = -70.57%
Formula
Percentage change = [(221 - 751) / 751] x 100
Subtract the new number by the original number
221 - 751 = -530
-530 ÷ 751 = -0.7057256990679095
-0.7057256990679095 x 100 = -70.57%